Photographic copy prevention of a screen image

ABSTRACT

A method for preventing photographic capture of a displayed image on an electronically controlled screen using a photographic capture device is provided. The method includes intercepting an image for display; generating a plurality of subset frames based on the intercepted image; dividing the intercepted image into a plurality of subsections; generating a pseudo random number on each of the subsections within the plurality of subsections using a pseudo random number generator; mapping, on each of the subset frames within the plurality of subset frames, a group of subsections within the plurality of subsections that share a common generated pseudo random number; and determining a frame rate value for displaying the plurality of subset frames, which enables human visualization of the plurality of subset frames as a single perceived frame.

BACKGROUND

The present invention generally relates to the field of computing, andmore particularly to image processing.

Many types of computer display screens may be used to presentinformation. For example, computer screens, tablet screens, andsmartphone screens may display sensitive and confidential information.Also, according to other examples, cinematic projection may presentvisual access to confidential and/or copyright protected material.

SUMMARY

According to one embodiment, a method for preventing photographiccapture of a displayed image on an electronically controlled screenusing a photographic capture device is provided. The method includesintercepting an image for display; generating a plurality of subsetframes based on the intercepted image; dividing the intercepted imageinto a plurality of subsections; generating a pseudo random number oneach of the subsections within the plurality of subsections using apseudo random number generator; mapping, on each of the subset frameswithin the plurality of subset frames, a group of subsections within theplurality of subsections that share a common generated pseudo randomnumber, whereby a single mapped subset frame contains a single group ofsubsections within the plurality of subsections sharing the commongenerated pseudo random number and the mapping is performed from thelowest generated pseudo random number to the highest generated pseudorandom number; and determining a frame rate value for displaying theplurality of subset frames, which enables human visualization of theplurality of subset frames as a single perceived frame.

According to another embodiment, a computer system for preventingphotographic capture of a displayed image on an electronicallycontrolled screen using a photographic capture device is provided. Thecomputer system includes one or more processors, one or morecomputer-readable memories, one or more computer-readable tangiblestorage medium, and program instructions stored on at least one of theone or more tangible storage medium for execution by at least one of theone or more processors via at least one of the one or more memories,where the computer system is capable of performing a method. The methodincludes the steps of: intercepting an image for display; generating aplurality of subset frames based on the intercepted image; dividing theintercepted image into a plurality of subsections; generating a pseudorandom number on each of the subsections within the plurality ofsubsections using a pseudo random number generator; mapping, on each ofthe subset frames within the plurality of subset frames, a group ofsubsections within the plurality of subsections that share a commongenerated pseudo random number, whereby a single mapped subset framecontains a single group of subsections within the plurality ofsubsections sharing the common generated pseudo random number and themapping is performed from the lowest generated pseudo random number tothe highest generated pseudo random number; and determining a frame ratevalue for displaying the plurality of subset frames, which enables humanvisualization of the plurality of subset frames as a single perceivedframe.

According to yet another embodiment, a computer program product forpreventing photographic capture of a displayed image on anelectronically controlled screen using a photographic capture device isprovided. The computer program product includes one or morecomputer-readable tangible storage medium and program instructionsstored on at least one of the one or more tangible storage medium, theprogram instructions executable by a processor. The computer programproduct includes program instructions to: intercept an image fordisplay; generate a plurality of subset frames based on the interceptedimage; divide the intercepted image into a plurality of subsections;generate a pseudo random number on each of the subsections within theplurality of subsections using a pseudo random number generator; map, oneach of the subset frames within the plurality of subset frames, a groupof subsections within the plurality of subsections that share a commongenerated pseudo random number, whereby a single mapped subset framecontains a single group of subsections within the plurality ofsubsections sharing the common generated pseudo random number and themapping is performed from the lowest generated pseudo random number tothe highest generated pseudo random number; and determine a frame ratevalue for displaying the plurality of subset frames, which enables humanvisualization of the plurality of subset frames as a single perceivedframe.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

These and other objects, features and advantages of the presentinvention will become apparent from the following detailed descriptionof illustrative embodiments thereof, which is to be read in connectionwith the accompanying drawings. The various features of the drawings arenot to scale as the illustrations are for clarity in facilitating oneskilled in the art in understanding the invention in conjunction withthe detailed description.

FIG. 1 illustrates a networked computer environment according to oneembodiment.

FIG. 2 is an operational flow chart illustrating the steps carried outby a program to prevent photographic copy of a screen image according toat least one embodiment.

FIG. 3 an example of a combination of subset frames and subsectionsaccording to at least one embodiment.

FIG. 4 is a block diagram of internal and external components ofcomputers and servers depicted in FIG. 1 according to at least oneembodiment.

DETAILED DESCRIPTION

Detailed embodiments of the claimed structures and methods are disclosedherein; however, it can be understood that the disclosed embodiments aremerely illustrative of the claimed structures and methods that may beembodied in various forms. This invention may, however, be embodied inmany different forms and should not be construed as limited to theexemplary embodiments set forth herein. Rather, these exemplaryembodiments are provided so that this disclosure will be thorough andcomplete and will fully convey the scope of this invention to thoseskilled in the art. In the description, details of well-known featuresand techniques may be omitted to avoid unnecessarily obscuring thepresented embodiments.

Embodiments of the present invention relates to the field of computing,and more particularly to image protection. The following describedexemplary embodiments provide a system, method, and program product to,among other things, provide photographic capture protection for adisplay screen.

As previously described with respect to display screen images, manytypes of display screens, such as computer screens, tablet screens, andsmartphone screens, may be used to present sensitive and confidentialinformation. Additionally, cinematic projection may present visualaccess to confidential and/or copyright protected material. However, thephotographic image on the display screen may contain confidential orprotected information the user does not wish to be reproduced. As such,the reproduction of confidential or protected information may result inidentity theft, release of a trade secret, information protected underan attorney-client privilege, information protected under adoctor-patient privilege, and/or the duplication of copyrightedmaterial. Therefore, it may be advantageous, among other things, toprevent photographic copy of a screen image.

The one or more exemplary embodiments described herein provide asolution to protecting a display screen from photographic capture andreproduction that may contain confidential or protected information.According to one exemplary embodiment described herein, a method forprotecting an image visually presented on a display screen is provided.In accordance with one implementation, the image visually presented maybe broken up into a series of small subsets of the original image.Cycling through the series of small subsets at a given frame rate mayproduce a complete image, as perceived by the human eye; however, when aphotographic capture device is used to capture the presented image, thepresented image appears as an incomplete image. Thus, visual access topotentially confidential (e.g., legal documents) or protected (e.g.,copyright) information is prevented.

The present invention may be a system, a method, and/or a computerprogram product. The computer program product may include a computerreadable storage medium (or media) having computer readable programinstructions thereon for causing a processor to carry out aspects of thepresent invention.

The computer readable storage medium can be a tangible device that canretain and store instructions for use by an instruction executiondevice. The computer readable storage medium may be, for example, but isnot limited to, an electronic storage device, a magnetic storage device,an optical storage device, an electromagnetic storage device, asemiconductor storage device, or any suitable combination of theforegoing. A non-exhaustive list of more specific examples of thecomputer readable storage medium includes the following: a portablecomputer diskette, a hard disk, a random access memory (RAM), aread-only memory (ROM), an erasable programmable read-only memory (EPROMor Flash memory), a static random access memory (SRAM), a portablecompact disc read-only memory (CD-ROM), a digital versatile disk (DVD),a memory stick, a floppy disk, a mechanically encoded device such aspunch-cards or raised structures in a groove having instructionsrecorded thereon, and any suitable combination of the foregoing. Acomputer readable storage medium, as used herein, is not to be construedas being transitory signals per se, such as radio waves or other freelypropagating electromagnetic waves, electromagnetic waves propagatingthrough a waveguide or other transmission media (e.g., light pulsespassing through a fiber-optic cable), or electrical signals transmittedthrough a wire.

Computer readable program instructions described herein can bedownloaded to respective computing/processing devices from a computerreadable storage medium or to an external computer or external storagedevice via a network, for example, the Internet, a local area network, awide area network and/or a wireless network. The network may comprisecopper transmission cables, optical transmission fibers, wirelesstransmission, routers, firewalls, switches, gateway computers and/oredge servers. A network adapter card or network interface in eachcomputing/processing device receives computer readable programinstructions from the network and forwards the computer readable programinstructions for storage in a computer readable storage medium withinthe respective computing/processing device.

Computer readable program instructions for carrying out operations ofthe present invention may be assembler instructions,instruction-set-architecture (ISA) instructions, machine instructions,machine dependent instructions, microcode, firmware instructions,state-setting data, or either source code or object code written in anycombination of one or more programming languages, including an objectoriented programming language such as Smalltalk, C++ or the like, andconventional procedural programming languages, such as the “C”programming language or similar programming languages. The computerreadable program instructions may execute entirely on the user'scomputer, partly on the user's computer, as a stand-alone softwarepackage, partly on the user's computer and partly on a remote computeror entirely on the remote computer or server. In the latter scenario,the remote computer may be connected to the user's computer through anytype of network, including a local area network (LAN) or a wide areanetwork (WAN), or the connection may be made to an external computer(for example, through the Internet using an Internet Service Provider).In some embodiments, electronic circuitry including, for example,programmable logic circuitry, field-programmable gate arrays (FPGA), orprogrammable logic arrays (PLA) may execute the computer readableprogram instructions by utilizing state information of the computerreadable program instructions to personalize the electronic circuitry,in order to perform aspects of the present invention.

Aspects of the present invention are described herein with reference toflowchart illustrations and/or block diagrams of methods, apparatus(systems), and computer program products according to embodiments of theinvention. It will be understood that each block of the flowchartillustrations and/or block diagrams, and combinations of blocks in theflowchart illustrations and/or block diagrams, can be implemented bycomputer readable program instructions.

These computer readable program instructions may be provided to aprocessor of a general purpose computer, special purpose computer, orother programmable data processing apparatus to produce a machine, suchthat the instructions, which execute via the processor of the computeror other programmable data processing apparatus, create means forimplementing the functions/acts specified in the flowchart and/or blockdiagram block or blocks. These computer readable program instructionsmay also be stored in a computer readable storage medium that can directa computer, a programmable data processing apparatus, and/or otherdevices to function in a particular manner, such that the computerreadable storage medium having instructions stored therein comprises anarticle of manufacture including instructions which implement aspects ofthe function/act specified in the flowchart and/or block diagram blockor blocks.

The computer readable program instructions may also be loaded onto acomputer, other programmable data processing apparatus, or other deviceto cause a series of operational steps to be performed on the computer,other programmable apparatus or other device to produce a computerimplemented process, such that the instructions which execute on thecomputer, other programmable apparatus, or other device implement thefunctions/acts specified in the flowchart and/or block diagram block orblocks.

The flowchart and block diagrams in the Figures illustrate thearchitecture, functionality, and operation of possible implementationsof systems, methods, and computer program products according to variousembodiments of the present invention. In this regard, each block in theflowchart or block diagrams may represent a module, segment, or portionof instructions, which comprises one or more executable instructions forimplementing the specified logical function(s). In some alternativeimplementations, the functions noted in the block may occur out of theorder noted in the figures. For example, two blocks shown in successionmay, in fact, be executed substantially concurrently, or the blocks maysometimes be executed in the reverse order, depending upon thefunctionality involved. It will also be noted that each block of theblock diagrams and/or flowchart illustration, and combinations of blocksin the block diagrams and/or flowchart illustration, can be implementedby special purpose hardware-based systems that perform the specifiedfunctions or acts or carry out combinations of special purpose hardwareand computer instructions.

The following described exemplary embodiments provide a system, methodand program product to provide for protection from photographic captureof a display screen. Based on at least one implementation, the presentembodiment displays a series of subset frames that are portions of animage frame. When viewed at a specific frame rate, the subset frames canbe perceived as one image by the human eye, however the subset framescan be viewed as separate images when captured by a photographic capturedevice. As such, this technology may be used to safeguard protected orprivileged information.

The present embodiment may be designed to help prevent someone fromcopying full replication of a user's screen information using standardphotographic methods. According to one implementation, the presentembodiment may include dividing the visual presentation information intosmaller subsets (i.e. subsections of frames, dots, pixels, etc.) of theoriginal image and cycling though those displayed portions of the visualpresentation in such a way as to still allow human visual recognition.However, at the same time the present embodiment may prevent asingularly recognizable image of the screen from being captured in asingle snapshot. Furthermore, according to at least one implementation,the present embodiment may mix the subsections constantly and vary theframe refresh rate such that a series of images of the screen areunlikely to result in a coherent image of the screen. Additionally, thepresent embodiment may be implemented in hardware via a graphics displayadapter to apply to either a subsection or complete screen coverage andmay be made software selectable as needed.

For example, assuming the standard physical screen image of X by Ypixels, the present embodiment employs a configurable subset of Z frames(which are subsets of the entire image) and a configurable refresh ratemay be utilized. As such, the present embodiment may be implementedusing a series of rules (e.g., a rule to display the subsets of theentire image in a diagonal pattern) that determines which pixels go intoeach of the Z subset frames and ensures that all pixels are displayedwhen the complete series of Z subset frames is displayed. The series ofrules to implement by the present embodiment may be defined by the user.Additionally, the present embodiment may compensate for lower refreshrates by artificially brightening the pixels being displayed in eachframe, thereby allowing the user to view the image on a computer screen.When the refresh rate is lower, the Z subset frames projected on thecomputer display screen may be more difficult for the human eye toperceive as a complete image. By brightening the pixels for lowerrefresh rates, human visual recognition of the image as a complete imageis enhanced while the present embodiment continues to operate.

Referring now to FIG. 1, an exemplary networked computer environment 100in accordance with one embodiment is depicted. The networked computerenvironment 100 may include a computer 102 with a processor 104 and adata storage device 106 that is enabled to run a Photographic CapturePrevention Program 108A. The networked computer environment 100 may alsoinclude a server 112 that is enabled to run a Photographic CapturePrevention Program 108B and a communication network 110. The networkedcomputer environment 100 may include a plurality of computers 102 andservers 112, only one of which is shown for illustrative brevity.According at least one implementation, the present embodiment may alsoinclude a pseudo random number generator 114, which may be running onserver 112. The pseudo random number generator 114 may implementpatterns, such as horizontal, vertical, diagonal, scatter, etc., tocreate subsections to subset frames (described in more detail withrespect to FIG. 3). The communication network may include various typesof communication networks, such as a wide area network (WAN), local areanetwork (LAN), a telecommunication network, a wireless network, a publicswitched network and/or a satellite network. It may be appreciated thatFIG. 1 provides only an illustration of one implementation and does notimply any limitations with regard to the environments in which differentembodiments may be implemented. Many modifications to the depictedenvironments may be made based on design and implementationrequirements.

The client computer 102 may communicate with server computer 112 via thecommunications network 110. The communications network 110 may includeconnections, such as wire, wireless communication links, or fiber opticcables. As will be discussed with reference to FIG. 4, server computer112 may include internal components 800 a and external components 900 a,respectively and client computer 102 may include internal components 800b and external components 900 b, respectively. Client computer 102 maybe, for example, a mobile device, a telephone, a personal digitalassistant, a netbook, a laptop computer, a tablet computer, a desktopcomputer, or any type of computing device capable of running a programand accessing a network.

According to the present embodiment, a program, such as a PhotographicCapture Prevention Program 108A and 108B may run on the client computer102 or on the server computer 112. The Photographic Capture PreventionProgram 108A, 108B will prevent the photographic copying of a screenimage from a screen associated with a device, such as a computer 102.The Photographic Capture Prevention method is explained in furtherdetail below with respect to FIG. 2.

FIG. 2, an operational flowchart 200 illustrating the steps carried outby a program to prevent photographic capture of a standard physicalscreen image of X by Y pixels in accordance with one embodiment isdepicted. At 202 within the Photographic Capture Prevention Program108A, 108B (FIG. 1), an image frame sent for projection on the computerdisplay screen is intercepted in a repeated manner when the computerdisplay screen is operating. The Photographic Capture Prevention Program108A, 108B intercepts an image in a repeated manner. For example, as auser operating a computer, such as client computer 102 (FIG. 1), may beworking, the present embodiment may automatically capture an image framesent for projection on the computer display screen. The rate at whichthe Photographic Capture Prevention Program 108A, 108B intercepts animage may be based on the frame rate the computer display screen uses toproject images. For example, if the computer display screen projects animage at 30 frames per second, then the Photographic Capture PreventionProgram 108A, 108B may intercept images sent to the computer displayscreen 30 times per second. The Photographic Capture Prevention Program108A, 108B may be manually disabled by the user to allow a photographiccapture device, such as a camera, to reproduce the computer displayscreen.

Next at 204 within the Photographic Capture Prevention Program 108A,108B (FIG. 1), a user configurable subset of Z blank subset frames isgenerated. For example, the user configurable variable Z may be set as5. As such, upon capturing an image sent for projection on a computerdisplay screen, the present embodiment generates 5 blank subset frames.

Then at 206 within the Photographic Capture Prevention Program 108A,108B (FIG. 1), the intercepted image is divided into a number ofsubsections (i.e. N×M). As such, to create the number of subsections,the present embodiment may divide the intercepted image into a series ofN×M boxes, whereby N and M may represent numbers configurable by theuser or, in an alternate implementation, may be automatically generatedby the Photographic Capture Prevention Program 108A and 108B (FIG. 1).Furthermore, N×M may represent the horizontal and vertical axis of theintercepted image. For example, if there are 5 subset frames, the totalnumber of subsections is equal to 25 (i.e. 5×5). Similarly, in the sameexample, a greater number of smaller subsections may be implemented suchthat the 5 subset frames may be divided into 100 subsections (i.e.10×10).

Following next at 208 within the Photographic Capture Prevention Program108A, 108B (FIG. 1), a pseudo random number is generated. As such,according to one implementation a pseudo random number generator 114(FIG. 1) running on a server, such as server 112 (FIG. 1), may beutilized to coordinate the distribution of the N×M subsections to the Zsubset frames. Therefore, the pseudo random number generator 114(FIG. 1) may assign a number, among the integers 1 through Z (i.e. thenumber of subset frames), to each of the N×M subsections. Then, a totalof (N×M)/Z subsections may be assigned to each subset frame. The numberassigned to a subsection by the pseudo random number generator 114(FIG. 1) may correspond to the particular subset frame upon which thesubsection may be displayed. Therefore, continuing with the examplepreviously described above, when there are 5 subset frames and 25subsections, the pseudo random number generator 114 (FIG. 1) may assignthe numbers 1 through 5 to each of the subsections. As such, since thereare 5 subset frames among which to divide the subsections, each subsetframe may be assigned 5 subsections to display. Therefore, thisdesignation would translate to 5 subsections being assigned the integer“1,” five subsections being assigned the integer “2,” and so on untilall of the subsections have been assigned a pseudo random number thatcorresponds to a subset frame.

Next at 210 within the Photographic Capture Prevention Program 108A,108B (FIG. 1), subsections are mapped to a subset frame. As such, onceeach of the N×M subsections is assigned a pseudo random number, thesubsections may be mapped on the subset frame corresponding to theparticular number assigned via the pseudo random number generator 114(FIG. 1). Furthermore, the mapping of the N×M subsections to the Znumber of subset frames may be performed, according to oneimplementation, from the subsections with the lowest generated pseudorandom number to the subsections with highest generated pseudo randomnumber. Additionally, each subset frame in the Z number of subset framesmay contain a single group of subsections sharing a common generatedpseudo random number. Therefore, when properly mapped, such adistribution may create Z number of subset frames that may each displaya 1/Z portion of the original image.

Next at 212 within the Photographic Capture Prevention Program 108A,108B (FIG. 1), the subset frames are displayed. Therefore, after themapping of the number of subsections is complete, the PhotographicCapture Prevention Program 108A, 108B (FIG. 1) may transmit the mappedsubset frames containing 1/Z portion of the original image to thecomputer display screen for projection. According to one implementation,the subset frames may be projected on the computer display screen of thecomputer 102 at a frame rate that may still allow for human visualrecognition of the image projected on the computer display screen whilethe computer is in use by the user. However, a singularly comprehensibleimage of the screen and derivatives of that captured digital imagecannot be captured in a single snapshot by a photographic capturedevice, such as a camera. Furthermore, to compensate for lower refreshrates (or a large number of Z frames), the brightness of the individualsubsections may be artificially brightened according to oneimplementation. Increasing the brightness of the individual subsectionsfor lower refresh rates enables the human eye to more clearly visualizethe image when the image is on the screen for a brief period of time.

Then at 214, it may be determined whether the method may terminate.According to one implementation, the method may terminate based onvarious circumstances, such as user intervention, the amount of elapsedtime, system performance, etc. If it is determined that the methodshould terminate, then the method may end. However, if at 214, it isdetermined that the method should not terminate, then the method maycontinue back to step 202 to intercept a frame of the screen image aspreviously described.

It may be appreciated that FIG. 2 provides only an illustration of oneimplementation and does not imply any limitations with regard to howdifferent embodiments may be implemented. Many modifications to thedepicted environments may be made based on design and implementationrequirements. For example, as previously described, the presentembodiment may be implemented in hardware via a graphics display adapterto apply to either a subset or complete screen coverage and may be madesoftware selectable as needed.

Referring now to FIG. 3, an example 300 of an intercepted photographicimage in accordance with one embodiment is depicted. Upon interceptingthe image and generating a user configurable subset of Z blank subsetframes 358 (as previously described with respect to the method explainedin FIG. 2) within the Photographic Capture Prevention Program 108A and108B (FIG. 1), the intercepted photographic image 302 may include acertain number of columns (i.e. N 304) that correspond to the X-axis ofthe intercepted image and a certain number of rows (i.e. M 306) thatcorrespond to the Y-axis. As previously explained, N 304 and M 306 mayrepresent numbers configurable by the user in one implementation or, inan alternate implementation, may be automatically generated by thePhotographic Capture Prevention Program 108A and 108B (FIG. 1). Withinthe Photographic Capture Prevention Program 108A and 108B (FIG. 1), thevalues of N and M may be used to formulate the number of subsections308-356 (i.e. N×M). For example, if the number of columns N 304 equals 5(N=5) and the number of rows M 306 equals 5 (M=5), then the number ofsubsections 308-356 represented on the intercepted image 302 is 25 (i.e.5×5=25).

For example purposes, the method previously explained in FIG. 2 may beimplemented with respect to FIG. 3 as follows. Within the PhotographicCapture Prevention Program 108A, 108B (FIG. 1), the pseudo random numbergenerator 114 (FIG. 1) may assign each of the 25 subsections to one ofthe Z subset frames 358. Thereafter, in accordance with the methodpreviously described in FIG. 2, the pseudo random number generator 114(FIG. 1) may assign the 25 subsections 308-356 in a diagonal pattern(308-316) for displaying the subsections. Additionally, in accordancewith alternate implementations, the pseudo random number generator 114(FIG. 1) may implement other patterns, such as horizontal, vertical,scatter, etc., to map the subsections to the Z subset frames 358. Forexample, in accordance with FIG. 3, the pseudo random number generator114 (FIG. 1) may assign a random number, such as the integer “1,” to 5subsections 308, 310, 312, 314, and 316, which may be equal to (M×N)/Z.According to one implementation, these 5 subsections 308, 310, 312, 314,and 316 may all be mapped to the same subset frame 360. Thereafterwithin the Photographic Capture Prevention Program 108A, 108B (FIG. 1),the same process may be implemented to map the remaining subsections318-356 to the remaining subset frames 362-368. In addition, mapping thesubsections 308-356 to the subset frames 360-368 may occur in the orderof the lowest generated pseudo random number to the highest generatedpseudo random number (e.g. “1” in 308-316 to “5” in 348-356) until allsubsections 308-356 assigned a particular pseudo random number aremapped on the same subset frame 360-368. Upon completion of the mappingof the subsections 308-356, the subset frames 360-368 may be transmittedfor projection at a frame rate that may allow for human visualrecognition of the image on the computer display screen. However,according to the present embodiment, a singularly recognizable image ofthe screen may be prevented from being captured in a single snapshot bya photographic capture device, such as a camera. It may be appreciatedthat FIG. 3 provides only an illustration of one implementation of thedistribution of the subsections on the subset frames and does not implyany limitations with regard to how different embodiments may beimplemented. Many modifications to the depicted environments may be madebased on design and implementation requirements.

FIG. 4 is a block diagram 400 of internal and external components ofcomputers depicted in FIG. 1 in accordance with an illustrativeembodiment of the present invention. It should be appreciated that FIG.4 provides only an illustration of one implementation and does not implyany limitations with regard to the environments in which differentembodiments may be implemented. Many modifications to the depictedenvironments may be made based on design and implementationrequirements.

Data processing system 800, 900 is representative of any electronicdevice capable of executing machine-readable program instructions. Dataprocessing system 800, 900 may be representative of a smart phone, acomputer system, PDA, or other electronic devices. Examples of computingsystems, environments, and/or configurations that may represented bydata processing system 800, 900 include, but are not limited to,personal computer systems, server computer systems, thin clients, thickclients, hand-held or laptop devices, multiprocessor systems,microprocessor-based systems, network PCs, minicomputer systems, anddistributed cloud computing environments that include any of the abovesystems or devices.

User client computer 102 (FIG. 1), and network server 112 (FIG. 1) mayinclude respective sets of internal components 800 a, b and externalcomponents 900 a, b illustrated in FIG. 4. Each of the sets of internalcomponents 800 a, b includes one or more processors 820, one or morecomputer-readable RAMs 822 and one or more computer-readable ROMs 824 onone or more buses 826, and one or more operating systems 828 and one ormore computer-readable tangible storage devices 830. The one or moreoperating systems 828 and the Photographic Capture Prevention Program108A (FIG. 1) in client computer 102 (FIG. 1) and Photographic CapturePrevention Program 108B (FIG. 1) in network server computer 112 (FIG. 1)are stored on one or more of the respective computer-readable tangiblestorage devices 830 for execution by one or more of the respectiveprocessors 820 via one or more of the respective RAMs 822 (whichtypically include cache memory). In the embodiment illustrated in FIG.4, each of the computer-readable tangible storage devices 830 is amagnetic disk storage device of an internal hard drive. Alternatively,each of the computer-readable tangible storage devices 830 is asemiconductor storage device such as ROM 824, EPROM, flash memory or anyother computer-readable tangible storage device that can store acomputer program and digital information.

Each set of internal components 800 a, b, also includes a R/W drive orinterface 832 to read from and write to one or more portablecomputer-readable tangible storage devices 936 such as a CD-ROM, DVD,memory stick, magnetic tape, magnetic disk, optical disk orsemiconductor storage device. A software program, such as PhotographicCapture Prevention Program 108A (FIG. 1) and 108B (FIG. 1), can bestored on one or more of the respective portable computer-readabletangible storage devices 936, read via the respective R/W drive orinterface 832 and loaded into the respective hard drive 830.

Each set of internal components 800 a, b also includes network adaptersor interfaces 836 such as a TCP/IP adapter cards, wireless Wi-Fiinterface cards, or 3G or 4G wireless interface cards or other wired orwireless communication links. The Photographic Capture PreventionProgram 108A (FIG. 1) in client computer 102 (FIG. 1) and PhotographicCapture Prevention Program 108B (FIG. 1) in network server 112 (FIG. 1)can be downloaded to client computer 102 (FIG. 1) from an externalcomputer via a network (for example, the Internet, a local area networkor other, wide area network) and respective network adapters orinterfaces 836. From the network adapters or interfaces 836, thePhotographic Capture Prevention Program 108A (FIG. 1) in client computer102 (FIG. 1) and the Photographic Capture Prevention Program 108B(FIG. 1) in network server computer 112 (FIG. 1) are loaded into therespective hard drive 830. The network may comprise copper wires,optical fibers, wireless transmission, routers, firewalls, switches,gateway computers and/or edge servers.

Each of the sets of external components 900 a, b can include a computerdisplay monitor 920, a keyboard 930, and a computer mouse 934. Externalcomponents 900 a, b can also include touch screens, virtual keyboards,touch pads, pointing devices, and other human interface devices. Each ofthe sets of internal components 800 a, b also includes device drivers840 to interface to computer display monitor 920, keyboard 930 andcomputer mouse 934. The device drivers 840, R/W drive or interface 832and network adapter or interface 836 comprise hardware and software(stored in storage device 830 and/or ROM 824).

The descriptions of the various embodiments of the present inventionhave been presented for purposes of illustration, but are not intendedto be exhaustive or limited to the embodiments disclosed. Manymodifications and variations will be apparent to those of ordinary skillin the art without departing from the scope and spirit of the describedembodiments. The terminology used herein was chosen to best explain theprinciples of the one or more embodiment, the practical application ortechnical improvement over technologies found in the marketplace, or toenable others of ordinary skill in the art to understand the embodimentsdisclosed herein.

What is claimed is:
 1. A method for preventing the photographic captureof a displayed image on an electronically controlled screen of aphotographic capture device, the method comprising: intercepting, usinga processor device, an image for display on the electronicallycontrolled screen; generating a plurality of subset frames based on theintercepted image; dividing the intercepted image into a plurality ofsubsections; generating a pseudo random number on each of thesubsections within the plurality of subsections using a pseudo randomnumber generator; mapping, on each of the subset frames within theplurality of subset frames, a group of subsections within the pluralityof subsections that share a common generated pseudo random number,wherein a single mapped subset frame contains a single group ofsubsections within the plurality of subsections sharing the commongenerated pseudo random number and the mapping is performed from thelowest generated pseudo random number to the highest generated pseudorandom number; and determining a frame rate value for displaying theplurality of subset frames, wherein the frame rate value enables a humanvisual recognition of the plurality of subset frames as a singleperceived frame corresponding to the intercepted image and disables avisualization from the electronically controlled screen of thephotographic capture device.
 2. The method of claim 1, wherein a totalnumber of each of the subset frames within the plurality of subsetframes is configurable.
 3. The method of claim 1, wherein the totalnumber of each of the subsections within the plurality of subsections isconfigurable.
 4. The method of claim 1, wherein the generated pseudorandom number is generated on each of the subsections within theplurality of subsections in at least one of a vertical pattern, ahorizontal pattern, a diagonal pattern, and a scatter pattern.
 5. Themethod of claim 1 further comprising: varying the determined frame ratevalue for displaying the plurality of subset frames; and displaying theplurality of subset frames based on the varied determined frame rate. 6.The method of claim 5 further comprising: brightening the individualsubset frames within the displayed plurality of subset frames based onthe varied determined frame rate.
 7. The method of claim 1, wherein eachof the subsections within the plurality of subsections is of anonuniform size.
 8. A computer system for preventing the photographiccapture of a displayed image on an electronically controlled screen of aphotographic capture device, the computer system comprising: one or moreprocessors, one or more computer-readable memories, one or morecomputer-readable tangible storage medium, and program instructionsstored on at least one of the one or more tangible storage medium forexecution by at least one of the one or more processors via at least oneof the one or more memories, wherein the computer system is capable ofperforming a method comprising: intercepting, using a processor device,an image for display on the electronically controlled screen; generatinga plurality of subset frames based on the intercepted image; dividingthe intercepted image into a plurality of subsections; generating apseudo random number on each of the subsections within the plurality ofsubsections using a pseudo random number generator; mapping, on each ofthe subset frames within the plurality of subset frames, a group ofsubsections within the plurality of subsections that share a commongenerated pseudo random number, wherein a single mapped subset framecontains a single group of subsections within the plurality ofsubsections sharing the common generated pseudo random number and themapping is performed from the lowest generated pseudo random number tothe highest generated pseudo random number; and determining a frame ratevalue for displaying the plurality of subset frames, wherein the framerate value enables a human visual recognition of the plurality of subsetframes as a single perceived frame corresponding to the interceptedimage and disables a visualization from the electronically controlledscreen of the photographic capture device.
 9. The computer system ofclaim 8, wherein a total number of each of the subset frames within theplurality of subset frames is configurable.
 10. The computer system ofclaim 8, wherein the total number of each of the subsections within theplurality of subsections is configurable.
 11. The computer system ofclaim 8, wherein the generated pseudo random number is generated on eachof the subsections within the plurality of subsections in at least oneof a vertical pattern, a horizontal pattern, a diagonal pattern, and ascatter pattern.
 12. The computer system of claim 8 further comprising:varying the determined frame rate value for displaying the plurality ofsubset frames; and displaying the plurality of subset frames based onthe varied determined frame rate.
 13. The computer system of claim 12further comprising: brightening the individual subset frames within thedisplayed plurality of subset frames based on the varied determinedframe rate.
 14. The computer system of claim 8, wherein each of thesubsections within the plurality of subsections is of a nonuniform size.15. A computer program product for preventing the photographic captureof a displayed image on an electronically controlled screen of aphotographic capture device, the computer program product comprising:one or more computer-readable tangible storage medium and programinstructions stored on at least one of the one or more tangible storagemedium, the program instructions executable by a processor, the programinstructions comprising: program instructions to intercept, using aprocessor device, an image for display on the electronically controlledscreen; program instructions to generate a number of subset frames basedon the received frame; program instructions to divide the image into anumber of subsections; program instructions to generate, by theprocessor, a pseudo random number on each of the number of subsectionsusing a pseudo random number generator; program instructions to map onthe number of subset frames, the number of subsections corresponding tothe pseudo random number assigned to each individual subsection in thenumber of subsections; and program instructions to determine a framerate value for displaying the number of subset frames, the frame ratevalue enabling a human visual recognition of the number of subset framesas a single perceived frame corresponding to the image and disables avisualization from the electronically controlled screen of thephotographic capture device.
 16. The computer program product of claim15, wherein a total number of each of the subset frames within theplurality of subset frames is configurable.
 17. The computer programproduct of claim 15, wherein the total number of each of the subsectionswithin the plurality of subsections is configurable.
 18. The computerprogram product of claim 15, wherein the generated pseudo random numberis generated on each of the subsections within the plurality ofsubsections in at least one of a vertical pattern, a horizontal pattern,a diagonal pattern, and a scatter pattern.
 19. The computer programproduct of claim 15 further comprising: varying the determined framerate value for displaying the plurality of subset frames; and displayingthe plurality of subset frames based on the varied determined framerate.
 20. The computer program product of claim 19 further comprising:brightening the individual subset frames within the displayed pluralityof subset frames based on the varied determined frame rate.